Natural convection with High Ra

January 9, 2006, 10:37

I am simulating the natural convection in an enclosed cavity (H/W=4)with high Ra up to 10^12 and the time averaged Nu at hot wall for Ra<=10^10 are agree well with those by Le Quere et al in 1995. But I have not found the results for larger Ra now. Would you please tell me where I can find them.

Thanks in advance.

Baochang

January 10, 2006, 09:18

See Betts, P. L., and Bokhari, I. H., 2000, "Experiments on turbulent natural convection in an enclosed tall cavity", Int. J. Heat & Fluid Flow, 21, pp. 675-68. It seems to me that Ra based on the heghit is about 2e+10 there.

Alexey.

January 10, 2006, 22:54

Dear Alexey,

Thanks a lot. For larger Ra?

Baochang

January 13, 2006, 13:59

SEE

http://cfd.me.umist.ac.uk/tmcfd/expdata/bettbok.html

FOR EXPERIMENTAL RESULTS OF

Experiments on Turbulent Natural Convection in an Enclosed Tall Cavity P.L. Betts & I.H. Bokhari

January 17, 2006, 05:10

flow (generated by turbulent natural convection)through long rectagular cavity (length=1.5m, width=0.15m, cavity=0.002m )please help me to form nevier stroke equation and procedure to solve it by finite volume method

January 9, 2006, 10:37	Natural convection with High Ra	#1
B C Shi Guest Posts: n/a	I am simulating the natural convection in an enclosed cavity (H/W=4)with high Ra up to 10^12 and the time averaged Nu at hot wall for Ra<=10^10 are agree well with those by Le Quere et al in 1995. But I have not found the results for larger Ra now. Would you please tell me where I can find them. Thanks in advance. Baochang

January 10, 2006, 09:18	Re: Natural convection with High Ra	#2
Alexey Guest Posts: n/a	See Betts, P. L., and Bokhari, I. H., 2000, "Experiments on turbulent natural convection in an enclosed tall cavity", Int. J. Heat & Fluid Flow, 21, pp. 675-68. It seems to me that Ra based on the heghit is about 2e+10 there. Alexey.

January 10, 2006, 22:54	Re: Natural convection with High Ra	#3
Baochang Guest Posts: n/a	Dear Alexey, Thanks a lot. For larger Ra? Baochang

January 13, 2006, 13:59	Re: Natural convection with High Ra	#4
FELIPE Guest Posts: n/a	SEE http://cfd.me.umist.ac.uk/tmcfd/expdata/bettbok.html FOR EXPERIMENTAL RESULTS OF Experiments on Turbulent Natural Convection in an Enclosed Tall Cavity P.L. Betts & I.H. Bokhari

January 17, 2006, 05:10	flow through rectagular cavity	#5
lawankar s m Guest Posts: n/a	flow (generated by turbulent natural convection)through long rectagular cavity (length=1.5m, width=0.15m, cavity=0.002m )please help me to form nevier stroke equation and procedure to solve it by finite volume method

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